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Features

Boiler Corrosion

A Study Of Electro-Chemical Action

The Stability of Ships

Misconceptions Corrected

Blowpipe Method for Cutting Iron or Steel

Interesting Cam Constructions

Novel Mechanical Movements

By Edward Person

Tunnels in being and Tunnels to Come

The work of the Burrowing Engineer

The German Army

Its Merits and its Defects

By Richard Thirsk

The Story of Silk

From Cocoon To Fabric

By John L. Cowan

A Test for Intelligence

By R. S. Woodworth

Method of Manufacturing Sulphuric Acid

Water-Vapor on Mars

Reply to Campbell'S Criticism

By F. W. Very

Concrete in Palestine

Cost of Power for Various Purposes

Microphotography Simplified

A Cheap Micro-Camera and what it can do

By Bernard Thomas

A Wave-Length Comparator

Standard Measurement in Wave-Lengths of Light

By A. E. H. Tutton

Trade Notes and Formulæ

Alcohol in Internal Combustion Engines

Elevators

Engineering Notes

Departments

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    Scientific American Supplements Volume 69, Issue 1790supp

    Think Outside the Gift Box